ASTROSAT CZTI

Data Quality Report

Orbit 39202

Creation date: 2024-06-27T22:01:44.610751
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev$

Source files: Data quality report (detailed, human readable) | Data quality report (concise, machine readable)

Observation information


Basic statistics of files

Param Original file Final file
FilenamemodeM0/AS1A12_054T04_9000005446_39202cztM0_level2.fits modeM0/AS1A12_054T04_9000005446_39202cztM0_level2_quad_clean.evt
Size (bytes)503,280,00083,185,920
Size480.0 MB 79.3 MB
Events in quadrant A2,943,973643,199
Events in quadrant B2,652,502642,980
Events in quadrant C2,477,729599,224
Events in quadrant D10,154,721272,830

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0230
C0230
D0240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0117393
B0113062
C0104052
D0337212

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5150340.660194%
B5150721.398058%
C515060.116505%
D5150301558.543689%

Noise dominated fraction

Noise dominated data is calculated using 1-second bins in cleaned event files. If a bin has >2000 counts, and if more than 50% of those come from <1% of pixels, then it is considered to be noise-dominated and hence unusable.

Quadrant # 1 sec bins Bins with >0 counts Bins with >2000 counts High rate bins dominated by noise Noise dominated (total time) Noise dominated (detector-on time) Marked lightcurve
A 7273 5151 22 22 0.30% 0.43%
B 7273 5151 46 46 0.63% 0.89%
C 7273 5151 2 2 0.03% 0.04%
D 7272 5150 2538 2538 34.90% 49.28%

Top noisy pixels

Top three noisy pixels from each quadrant. If the there are fewer than three noisy pixels in the level2.evt file, extra rows are filled as -1

Pixel properties Quadrant properties
Quadrant DetID PixID Counts Sigma Mean Median Sigma
A 10 83 437683 3604.67 596 586 121.3
A 9 143 148465 1219.53 596 586 121.3
A 13 248 48906 398.49 596 586 121.3
B 5 172 252238 2254.36 586 571 111.6
B 5 184 83700 744.64 586 571 111.6
B 12 111 13233 113.42 586 571 111.6
C 15 214 218845 1650.32 572 575 132.3
C 0 10 15998 116.61 572 575 132.3
C 13 61 3842 24.7 572 575 132.3
D 12 235 7120836 65722.34 441 429 108.3
D 2 249 1033237 9532.96 441 429 108.3
D 13 171 44827 409.8 441 429 108.3

Detector plane histogram (DPH)

Histogram calculated using DETX and DETY for each event in the final _common_clean file

Quadrant A Quadrant B
Quadrant D Quadrant C

Count rate plots and images

Plot type Count rate plots Images
Comparison with Poisson distribution
Blue bars denote a histogram of data divided into 1 sec bins.
Red curve is a Poisson curve with rate = median count rate of data.
Quadrant-wise count rates
Data is divided into 100 sec bins
Module-wise count rates for Quadrant A
Data is divided into 100 sec bins
Module-wise count rates for Quadrant B
Data is divided into 100 sec bins
Module-wise count rates for Quadrant C
Data is divided into 100 sec bins
Module-wise count rates for Quadrant D
Data is divided into 100 sec bins

Housekeeping plots

Parameter Plot
CZT HV Monitor
D_VDD
Temperature 1
Veto HV Monitor
Veto LLD
Alpha Counter
_CPM_Rate
CZT Counter
+2.5 Volts monitor
+5 Volts monitor
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter